It seems to make sense to call it Nubia Love considering that is what is printed on the cover of the second book. Can you also correct the formatting of the author name from all upper case please.
I've fixed the all-cap author's name, but looking at the summaries these appear to be the same book, just with a different title/cover. So I don't think creating a series makes sense.
book 2 https://www.goodreads.com/book/show/4...